@misc{indiciaee537fdddeb97,
  title = {The Helios program and the sun},
  author = {Ousley, G. W. and Kutzer, A. and Panitz, H. J.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19760063081},
  note = {Source identifier: 19760063081}
}